我想hover时 菜单平滑收回去，怎么实现啊_html/css_WEB-ITnose

怎样hover  出 list 时 平滑的收回去啊
示例是这个

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下面是css
[code=css][/  a{
            text-decoration: none;
            color: #333333;
        }
        .bar{
            list-style: none;
            width:150px;
            height:40px;
            line-height: 40px;
            font: "Microsoft YaHei",tahoma,arial,Hiragino Sans GB,\5b8b\4f53;
            transition:all .5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            border-bottom-left-radius: 8%;
            /*border-bottom-right-radius: 5%;*/
            top:40px;
            display: none;
            position: absolute;
        }

        .bar:hover {
            height:60px;
            /*line-height: 60px;*/

        }
        #bar1{

            background: rgba(255, 106 ,106,0.5);
        }
        #bar2{
           background: rgba(106, 90 ,205,0.5);
        }
        #bar3{
            background: rgba(127, 255, 0,0.5);
        }
        #bar4{
            background: rgba(99 ,184, 255,0.5);
        }
        #bar5{
            background: rgba(144 ,238 ,144,0.5);
        }
        .list{
            position: relative;
            width:150px;
            /*height:200px;*/
        }
.init1{
    position: relative;
    display:block;
}
        #logo{
            background: rgba(0,0,0,0.8);
            width:150px;
            height:40px;
            position: absolute;
            display: block;
            top:-40px;
            color:#ffffff;
        }

.test{
    display:block;
    top:-40px;
    position: relative;
}
code]

手中没有easing.js，，，运行不了楼主的代码，，，不过可以给楼主一点提示。。。
jquery的动画，，，，怎么动出来，，，，就可以怎么动回去。。。。
e.g.:
拉宽：$("id").animate({width:'51px'});
缩回：$(“id”).animate({width:'0px'});

            
•  HomeH

            
•  ProductH

            
•  DesigerH

            
•  BlogH

            
•  AboutH

        

    window.onload=function(){
        //code
        $("#logo").animate(
                {"top":"0px",
                    "opacity":1
                }, {
                    easing: 'easeOutQuart',
                    duration: 1800
                }

        )
        $("#logo").addClass("shake");
    }


    //css 版本
    $("ul").hover(function(){
        $(".bar").addClass("translate1");
    },function(){
        $(".bar").removeClass("translate1");
    })

不会写，但可以给你思路：
第一种：平滑展出后，紧跟着一个function，让list收回。
第二种：hover     list展出，hover     list父层就收回